Table 1 Demographic characteristics of samples completing first (N = 156) and second (N = 45) recalls, and of non-respondents (N = 301)
Characteristic | Non-respondents (N = 301) | First recall (N = 156) | Second recall (N = 45) |
|---|---|---|---|
Age (years)a, mean (SD) | 8.8 (2.9) | 8.7 (3.0) | 8.9 (2.9) |
4–6 (n, %) | 78 (25.9) | 45 (28.8) | 11 (24.4) |
7–10 (n, %) | 138 (45.8) | 65 (41.7) | 20 (44.4) |
11–15 (n, %) | 85 (28.2) | 46 (29.5) | 14 (31.1) |
Sexa, n (%) | |||
Female | 156 (51.8) | 67 (43.0) | 20 (44.4) |
Male | 145 (48.2) | 89 (57.1) | 25 (55.6) |
Siblingsa, n (%) | |||
0 | 30 (16.0) | 21 (19.4) | 7 (24.1) |
1 | 115 (61.2) | 64 (59.3) | 16 (55.2) |
2 or more | 43 (22.9) | 23 (21.3) | 6 (20.7) |
Missingb | 113 | 48 | 16 |
Family income, n (%) | |||
Less than $30,000 | 3 (1.6) | 2 (1.9) | 1 (3.6) |
$30,000 to $79,999 | 27 (14.8) | 8 (7.5) | 3 (10.7) |
$80,000 to $149,999 | 49 (26.8) | 38 (35.5) | 10 (35.7) |
$150,000 or more | 104 (56.8) | 59 (55.1) | 14 (50.0) |
Missingb | 118 | 49 | 17 |
BMI z scorea, n (%) | |||
≤ 1 (normal or underweight) | 226 (75.6) | 126 (81.8) | 34 (75.6) |
> 1 and ≤ 2 (overweight) | 46 (15.4) | 20 (13.0) | 9 (20.0) |
> 2 (obesity) | 27 (9.0) | 8 (5.2) | 2 (4.4) |
Missing | 2 | 2 | 0 |
Maternal ethnicity, n (%) | |||
European | 182 (67.9) | 104 (73.2) | 31 (77.5) |
Asian | 46 (17.2) | 20 (14.1) | 6 (15.0) |
Otherc | 40 (14.9) | 18 (12.7) | 3 (7.5) |
Missing | 33 | 14 | 5 |